He is the most careful boy ____(我所知道的)

He is the most careful boy ____(我所知道的) He is a ____(careful)boy. 16.He is the most careful boy _____ I know.A.what B.which C. he is (careful/carefully) to look after the boy哪个是对的? He is the most careful student in our class. (改为比较级） He is _ He is the most careful student in our class（改为比较级） He is --- He is the most careful students in our school (改为同义句） He is（ The boy is active.he's____ ____ ____. He is a ____ boy . ____ clever boy he is The boy is too young to dress ____(he) he is an unfriendly boy, ____ he?